Watch List notes:

Herennius Etruscus Caesar (250-251 AD). AR Antoninianus. Obv. Q HER ETR MES DECIVS NOB C. Radiate and draped bust right. Rev. PRINCIPI IVVENTVTIS. Apollo seated left, holding branch and resting left elbow on lyre. RIC 146. AR. g. 4.38 mm. 21.50 R. Rare. Light cabinet tone. Minor porosity, otherwise VF.